Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 954 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — density, dissolving, capillary action, light bending, air pressure, push-back, air resistance or condensation. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.🛟 How should you check if the sugar has dissolved? (a) taste it (b) smell it closely (c) look for leftover grains (d) poke it with a finger
2. 2.True or false: a misty bathroom mirror is evaporation. (a) False (b) True
3. 3.🌈 In VIBGYOR, what number colour is indigo?
4. 4.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) chew them (c) throw them away safely (d) give them to a baby
5. 5.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) water with food colour (c) a spoon (d) a mirror
6. 6.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) yeast (c) a pencil (d) a strip of paper
7. 7.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.🛟 Does an ice cube float or sink in water? (a) sinks (b) floats
9. 9.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it turns to stone (c) it dissolves (d) it can float
10. 10.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is what we measure. (a) False (b) True
11. 11.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it travels less far (c) it goes backward first (d) it travels farther
12. 12.True or false: small test objects is needed for the float-or-sink test. (a) False (b) True
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) False (b) True
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a magnet (c) a mirror (d) a glass of water
15. 15.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) yeast (b) water (c) a big bowl (d) ice cubes
16. 16.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
17. 17.True or false: a mirror is needed for the float-or-sink test. (a) False (b) True
18. 18.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
19. 19.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is the one thing we change. (a) False (b) True
20. 20.🛟 Does a feather float or sink in water? (a) sinks (b) floats
21. 21.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) sugar (c) a clock or timer (d) a magnet
22. 22.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) fewer drops form (b) the water turns red (c) more drops form (d) the bowl freezes
23. 23.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is kept the same. (a) True (b) False
24. 24.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is kept the same. (a) True (b) False
25. 25.🍯 Why does honey sink to the bottom of the glass? (a) it is the coldest (b) it is the densest (c) it is the stickiest (d) it is yellow
26. 26.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we measure it (b) we keep it the same (c) we change it
27. 27.🚁 Which of these falls fast through the air? (a) a feather (b) a fluff of cotton (c) a coin (d) a paper helicopter
28. 28.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a mirror (b) a long string (c) a drinking straw (d) a balloon
29. 29.🚀 Which of these goes backward? (a) the swimmer (b) gas from the rocket (c) the balloon (d) the rocket
30. 30.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of pouring is what we measure. (a) False (b) True
31. 31.🛟 Does a glass marble float or sink in water? (a) floats (b) sinks
32. 32.🧺 Do we need honey for the density tower? (a) not needed (b) needed
33. 33.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) on top of the oil (c) under the honey (d) in the water layer
34. 34.True or false: vinegar is needed for the balloon rocket. (a) False (b) True
35. 35.🥄 Which of these dissolves slower? (a) sugar in warm water (b) sugar stirred well (c) sugar in icy water (d) powdered sugar
36. 36.🔍 Which is the odd one out? (a) a piece of foil (b) a piece of chalk (c) a cotton thread (d) a paper towel
37. 37.🔍 Which is the odd one out? (a) a suction hook (b) a fridge magnet (c) a magnetic pin holder (d) a compass needle
38. 38.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the oil layer (b) at the very bottom (c) in the water layer (d) on top of the oil
39. 39.True or false: chalk powder does not dissolve in water. (a) True (b) False
40. 40.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) two chairs (c) vinegar (d) a balloon

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